Distributed storage codes reduce latency in vehicular networks

Author

Sathiamoorthy, Maheswaran ; Dimakis, Alexandros G. ; Krishnamachari, Bhaskar ; Bai, Fan

Author_Institution

Univ. of Southern California, Los Angeles, CA, USA

fYear

2012

fDate

25-30 March 2012

Firstpage

2646

Lastpage

2650

Abstract

We investigate the benefits of distributed storage using erasure codes for file sharing in vehicular networks through realistic trace-based simulations. We find that coding offers substantial benefits over simple replication when the file sizes are large compared to the average download bandwidth available per encounter. Our simulations, based on a large real vehicle trace from Beijing combined with a realistic radio link quality model for a IEEE 802.11p dedicated short range communication (DSRC) radio, demonstrate that coding provides significant cost reduction in vehicular networks.

Keywords

cost reduction; mobile radio; network coding; peer-to-peer computing; IEEE 802.11p DSRC radio; IEEE 802.11p dedicated short range communication radio; average download bandwidth; cost reduction; distributed storage code reduce latency; erasure code; file sharing; real vehicle tracing; realistic radio link quality; realistic radio link quality model; realistic trace-based simulation; vehicular network; Ad hoc networks; Bandwidth; Delay; Encoding; Redundancy; Vehicles;

fLanguage

English

Publisher

ieee

Conference_Titel

INFOCOM, 2012 Proceedings IEEE

Conference_Location

Orlando, FL

ISSN

0743-166X

Print_ISBN

978-1-4673-0773-4

Type

conf

DOI

10.1109/INFCOM.2012.6195671

Filename

6195671